We don’t exactly have a huge amount of stock of 500 GB drives, but we have enough that we’re able to ship orders for the 130 hour HR10-250s and a few kits. Each day we get another shipment of the 500s and we’re keeping up with demand. So we’ve added kits based on these for the HD TiVo. On our site, you can now order for the HD TiVo:
-add 500 GB kit
-replace 500 GB kit
-dual 500 GB kit
They’re all on the HD TiVo Upgrade Kit page.